Muffler



RI'UBENSCHEK. MUFFLER.

APPLICATION FILED II-:Ia.s,192o.

Patented Nov. El, 192.1.

SGF

UNITED STATES PATENT OFFICE.

RUDOLF LIBENSCHEK, OF PITTSBURGH. PENNSYLVANIA, ASSIGNOR 0F ONE-THIRD TOSLAVK LOVRENCIC, OF BELLEVUE, PENNSYLVANIA, AND ONE-THIRD T0 PAULRADOCAJ, OF PITTSBURGH, PENNSYLVANIA.

MUFFLER.

Specification of Letters Patent.

Patented N ov. 1, 1921.

Application led February 6, 1920. Serial No. 356,589.

To all whom it may Concern."

Be it known that I. RUDOLF LIBENSCHEK. a citizen of the Republic ofJugo-Slavia. residing at Pittsburgh. in the county of Allegheny andState of Pennsylvania. have 1nvented newv and useful Improvements 1 nMutlers, of which the following is a speciication.

This invention relates to muiliers. and more particularly to a. muierspecially adapted for use in connection with automobile internalcombustion engines, and for similar purposes. Y

One of the main objects of the invention is to provide a mufiier of thecharacter stated which may be readily produced at small lcost andquickly and easily applied. Another ob- ]ect is to provide a muilierwhich will permit ready escape of the exhaust gases so Yas to' eliminateback pressure in the exhaust manifold of the engine. Further objectswill appear from the detailed description.

In the drawings Figure l is a central sectional view taken through amuiler constructed in accordance with my invention approximately in theplane of section line l-l of Fig. 2.

Fig. 2 is a transverse section through the muiiler taken substantiallyon line 2 2 of i 1. lgig. 3 is a fragmentary side view of the inner endport-ion of the central member of the muiiier.

Fig. 4 is an end view of the same.

The mutlier is cast as a unit and includes a central tube l forreceiving the exhaust gases, the inner portion of this tube beingslightly flared and split to form a. clamping element la adapted toreceive and be secured about exhaust pipe 2 of an internal combustionengine. Tube l communicates at its outer end with an elbow 3a `whichconnects the outer ends of the inner arms of two exhaust discharge tubes3 of elongated U- shape, the outer end of the outer arm of each of thesetubes being flared as at 3b to facilitate discharge of the exhaustgases. Each of the discharge tubes 3 is provided in each arm with a.plurality of baffles 1 which are disposed in staggered relation andinclined oppositely to the direction of flow of the exhaust gases. Tubel is provided with similar baifles 5, the outermost batlle 5a of whichis disposed at right angles to the other battles 5. An inwardly taperingdividing element 6 extends inwardly from the central portion of elbow 3aand serves to divide the column of exhaust gases discharged from baille5a into two substantially equal portions which fiow through therespective discharge tubes 3.

I have found by experience that very good results can be obtained with amutHer constructed in this manner. even when' the baiiles 1 and 5 areomitted. When the baiiles are employed there is practically no soundproduced and. for this reason. I prefer to employ the battles, althoughthere is very little sound produced when the baiies are omit-ted. AstheV exhaust gases can flow freely through the tube l and tubes 3, thereis no back pressure produced in the exhaust manifold of the engine.which is a decided practical advantage. As the muier may be produced asa unit by casting, it may be made and sold at a sufficiently low cost tojustify its extensive use.-

As will be appreciated, and as indicated herein, slight changes may bemade in the construction and arrangement of the details of the inventionwithout departino from the field and scope of the same, and intend toinclude all such variations as fall within the scope of the appendedclaims, in this application in which a preferred form only of myinvention is disclosed.

What I claim is:

l. In a muiiler, a central exhaust receiving tube, and lateral dischargetubes of substantially elongated U-shape communicating at their innerends with said exhaust receiving' tube, the arms of each of saiddischarge tubes being parallel with each other.

2. In a muilier, a central exhaust receiving tube, lateral dischargetubes of substantially elongated U-shaped communicating at their innerends with said central tube at the outer end thereof, and means fordividing the column of exhaust gases as it leaves the central tube so asto direct equal parts of the gases into the respective exhaust tubes.Ithe arms of each of said discharge tubes being parallel with each other.

3. In a muiiler, a central exhaust receivin tube, lateral dischargetubes of substantially elongated U-shape communicating at their innerends with said central tube at the outer end thereof, and a memberprojecting inwlardly of the discharges-'tubes centrally of.

f respective discharge tubes, the armsof each Yof said discharge beingparallel vvith' each other. 4. In a muier, a central exhaust receivingtube, lateral discharge tubes of substantially elongated U- v`inner endswith'said vcentral tube at the outer end thereof, a member projecting"inwardly of thev discharge tubes centrally of the outer end of saidcentral tube, said member being disposed .atl

so as toldirect to direct equal portions thereof into the v hapevcommunicating at their ight angles to the plane of the' k'lateral discarge ytubes and acting to divide the column of exhaust gases equalA`portions thereofvinto the respective discharge tubes, tubes, theoutermost baiile inthe central tube eing disposed atright angles to saidmemer. f 1.

5. In a muler, a centralexhaust `receiving tube, and lateral dischargetubes of substantially elongated U-'shape communicating at their innerends with said exhaust receiving tube, the arms vof the respectivedischarge tubes bein disposedin substantial parallelism with t ereceiving tube.

6. In a muffler, a central exhaust receiving tube, and lateral dischargetubes ofl substanand baies mounted in the tially elongated U-shapecommunicating at.

their inner ends with said exhaust receiving tube, theA arms of therespective discharge tubes being disposed in parallelism with each otherand with the receiving tube. v I n testimony whereof Iaiix my signature.

. RUDOLF LIBENSCHEK.

